In 1831, Faraday discovered that electricity moves through a wire a magnet（磁铁） is moved n

发布时间：2020-08-16 12:58:49


In 1831, Faraday discovered that electricity moves through a wire      a magnet（磁铁） is moved near the wire.  
A. where
B. so
C. when
D. but

网友回答

A. where
B. so
(答案→)C. when
D. but
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